What is the recommended weight gain for a woman with a normal BMI during pregnancy?

The recommended weight gain for a woman with a normal Body Mass Index (BMI) during pregnancy is 25-35 pounds. This recommendation is based on guidelines from the Institute of Medicine, which outlines that a healthy weight gain supports the growth and development of the fetus while minimizing the risk of complications for both the mother and the baby.

During pregnancy, the body undergoes numerous changes, including increased blood volume, amniotic fluid, and weight of the placenta and fetus, which all contribute to this recommended weight gain. Gaining within this range helps ensure that the baby grows appropriately while promoting the mother's health. Additionally, maintaining a weight gain within these parameters can help reduce the likelihood of excessive gestational weight gain, which can lead to complications such as gestational diabetes and hypertension.

While lower or higher weight gain ranges might seem appealing, they do not align with evidence-based guidelines for healthy pregnancy outcomes. For instance, inadequate weight gain might not provide sufficient resources for the developing fetus, while excessive weight gain can lead to negative health consequences for both mother and child. Maintaining an appropriate weight gain is crucial for a successful pregnancy experience.